Big Picture Science – Life Back Then

Time keeps on ticking, ticking … and as it does, evolution operates to produce remarkable changes in species. Wings may appear, tails disappear. Sea creatures drag themselves onto the shore and become landlubbers. But it’s not easy to grasp the expansive time scales involved in these transformative feats.

Travel through millennia, back through mega and giga years, for a sense of what can occur over deep time, from the Cambrian Explosion to the age of the dinosaurs to the rise of Homo sapiens.

Fun listening! Point was made that mammals became smart partially because they were nocturnal. How do we dinosaurs were daytime dwellers and not night time critters? Modern dinosaurs (owls, night hawks) are nocturnal. How do we know that early mammals were nocturnal? Just really curious! Thanks!